LCLS-II Gun/Buncher LLRF System Design

Huang, Gang; Babel, Sandeep; Bachimanchi, Ramakrishna; Benwell, Andrew; Boyes, Matt; Brown, Garth; Campbell, Kerri; Cha, David Nam Sul; Chase, Brian; Cullerton, Ed; De Long, Joseph; Diaz Cruz, Jorge; Doolittle, Lawrence; Einstein-Curtis, Joshua; Hong, Bo; Hovater, Curt; Jones, John; Klepec, Daniel; McCollough, Andre; Qiang, Du; Ratti, Alessandro; Rivetta, Claudio; Rogind, Deborah; Seidman, David; Serrano, Carlos; Zhou, Feng

doi:10.18429/JACoW-IPAC2018-WEPAL039

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RIS citation export for WEPAL039: LCLS-II Gun/Buncher LLRF System Design

TY - CONF
AU - Huang, G.
AU - Babel, S.
AU - Bachimanchi, R.
AU - Benwell, A.L.
AU - Boyes, M.
AU - Brown, G.W.
AU - Campbell, K.S.
AU - Cha, D.
AU - Chase, B.E.
AU - Cullerton, E.
AU - De Long, J.H.
AU - Diaz Cruz, J.A.
AU - Doolittle, L.R.
AU - Einstein-Curtis, J.
AU - Hong, B.
AU - Hovater, C.
AU - Jones, J.A.
AU - Klepec, D.W.
AU - McCollough, A.
AU - Qiang, Q.
AU - Ratti, A.
AU - Rivetta, C.H.
AU - Rogind, D.
AU - Seidman, D.J.
AU - Serrano, C.
AU - Zhou, F.
ED - Koscielniak, Shane
ED - Satogata, Todd
ED - Schaa, Volker RW
ED - Thomson, Jana
TI - LCLS-II Gun/Buncher LLRF System Design
J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018
C1 - Vancouver, BC, Canada
T2 - International Particle Accelerator Conference
T3 - 9
LA - english
AB - For a free electron laser, the stability of injector is critical to the final electron beam parameters, e.g., beam energy, beam arrival time, and eventually it determines the photon quality. The LCLS-II project's injector contains a VHF copper cavity as the gun and a two-cell L-band copper cavity as its buncher. The cavity designs are inherited from the APEX design, but requires more field stability than demonstrated in APEX operation. The gun LLRF system design uses a connectorized RF front end and low noise digitizer, together with the same general purpose FPGA carrier board used in the LCLS-II SRF LLRF system. The buncher LLRF system directly adopts the SRF LLRF chassis design, but programs the controller to run the normal conducting cavities. In this paper, we describe the gun/buncher LLRF system design, including the hardware design, the firmware design and bench test.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 2258
EP - 2261
KW - gun
KW - LLRF
KW - cavity
KW - SRF
KW - controls
DA - 2018/06
PY - 2018
SN - 978-3-95450-184-7
DO - 10.18429/JACoW-IPAC2018-WEPAL039
UR - http://jacow.org/ipac2018/papers/wepal039.pdf
ER -